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Thread: Regular 225 Opti vs 250 Opti XS
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04-10-2007, 11:40 AM #1
Regular 225 Opti vs 250 Opti XS
Hello,
could you help me to find out the difference between the Optimax 250XS and the regular Optimax 225? The 225 is the biggest Optimax available in Austria. I would like to have a bit more power for my 21´cat. Both engines are the 3L blocks, the 250 turns some 250 RPM more (the LU is different). Is there a easy way to get the 250 HP from the 225?
Thanks for all hints.
Roman
Vienna,Austria
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04-10-2007, 12:39 PM #26000 RPM
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It's a bit more than 25 hp difference.
jim
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04-10-2007, 01:26 PM #3
Would you happen to have that curve chart for the 225 Pro XS??
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04-10-2007, 10:08 PM #46000 RPM
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Sorry
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04-14-2007, 08:21 AM #55000 RPM
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quick differences between 225 opti and 250XS:
liners
pistons
cylinder head
those differences alone make it economically unfeasable to try and upgrade
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04-16-2007, 01:42 AM #6
Jimmyb,
thanks for the hint.
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01-31-2018, 10:26 AM #75000 RPM
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also most xs motors run higher fuel & air pressures than stock motors. & rpm limiters are 500 rpm higher making more hp.
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02-01-2018, 02:31 PM #8Member
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02-04-2018, 02:38 PM #95000 RPM
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the engine blocks come down the same assy. line, on the newer motors. the only diff. is black inj,s that run 105-90 psi on xs motors & the ecm.
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02-06-2018, 03:28 PM #105000 RPM
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The 250 XS motors have a higher port timing, carbon fiber reeds, higher air & fuel pressure and Gray injectors. They only also have different fuel and ignition curves and higher rev limit. Only the outside of the blocks are the same.